128818354226 has 8 divisors (see below), whose sum is σ = 193231521324. Its totient is φ = 64407847120.

The previous prime is 128818354213. The next prime is 128818354243. The reversal of 128818354226 is 622453818821.

It can be written as a sum of positive squares in 2 ways, for example, as 123024861001 + 5793493225 = 350749^2 + 76115^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539165 + ... + 740496.

Almost surely, 2^128818354226 is an apocalyptic number.

128818354226 is a deficient number, since it is larger than the sum of its proper divisors (64413167098).

128818354226 is a wasteful number, since it uses less digits than its factorization.

128818354226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329996.

The product of its digits is 1474560, while the sum is 50.

The spelling of 128818354226 in words is "one hundred twenty-eight billion, eight hundred eighteen million, three hundred fifty-four thousand, two hundred twenty-six".